Adjustable ball-bea btwft



ARTHUR BEBNNALL AND AKSEL PULKKA. OF CHICAGO. IlillGlS,`

amusranna BALL-ennemi:

Specieation of Letters Patent.

Patented Dec. 9, 1919.

application mea apra 2a, 191e. sei-iai it. 293.035.

To all lwhom it may conce/m.'

Be it known that we, ARTHUR BeaNwALL, a subject of the King of Sweden, residing at Chicago, in the county oCook and State of illinois, and KSEL PULKKA, a subject of Finland, `residing at Chicago, in the county of Cook and State of illinois, have invented certain new and useful Improve ments in Adjustable Ball-Bearings; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to ball bearings and it relates more speeilically to an improve adjustable 'ball bearing. l

One obiect of this invention is to provide an exceedingly eective construction in which the ball-races may be vens7 aeeurat/elj,7 adjusted without danger of adjusting them too tightly. and in which the ball-races are securelyheld in adjustment by the means which limits their movement during :ad-

justment.

Other objects and advantages mav become apparent to persons who read the following details of description in connection with the accompanying drawings in which:

Figure 1 is an elevation. illustrating our improved ball bearing.

Fig, 2 is a rentral section along the axis or' the ball races, as indicated by theline eve of Fig. i.

Referring: to these drawings in detail in which similar reference characters correspond with similar parts throughout the several views. the device consists of a main ring or outer race member an intermediary or subsidiary rinpT 6. an inner ring,7 or race member 7. a .pluralitiy ot set screws 8, and a pluraliti` of bearing balls 9.

The main rinpr is formed with a ball race 10. a screw-threaded aperture lland an internal screw-thread 12. The ring 6 is formed with external screw-threads 133 and with a bearingr race 14. The inner member 7 is formed with a bearing race 15` and this member may be hollow, as indicated. or of anyv appropriate ronstruction` i threaded From the foregoing description of the construction, it Will be seen that the ring 6 can only be screwed inward to the extent permitted by the position of the set screws 1l. Therefore. when the ball bearing is in operation. it is impossible for the races to become shifted in such relation as to bind against the balls. However, when the races have become. worn, so that it is necessary to move the ball race 1l inwarditowa-rd the ball race 10, the screws 8 may be loosened,

so that the. ring f3 may be screwed inward i to the desired adjusted position, whereupon the screws 8 may be tightened so that their inner ends bind a fainst the inner plane surface of the member 6, so that any excessive pressure of the rin@ 6 against the balls is relieved, and at the same time," the ring 6 is frietionally locked in its seat.

From the for' going description it will 'be seen that we .h ve provided a ball bearing which is very'compact, consists of a very i few parts, and that the ldevioe is very prac tical and comparatively inexpensive.

Although we have described this embodiment of our invention very specifically, it is not intended to limit this invention to these exact details of construction and a1'- rangement of parts. but. we are entitled to make appropriate changes within ther scope of the inventive idea disclosed in the fore-v going description and following claims.

What we claim as our invention is: l. ln a ball bearing. an internally threaded ring formed with a ball-race and with an apeiture between said ballmace and the periphery of the ring, i an externally having its threads engaged with those of the internally threaded ring, a screw in said aperture and being normally in contact with said externally threaded ring and operatable to control adjustment of the latter, and a ball-race member havingr its ball-"ace in position to coact with the. ball races of said rings for carrying bearing-balls.

Ih'gn a ball bearing,` an internally threaded ring formed with a ball-rare and with' a screw-threaded aperture extending between the ball race and the periphery of the ring in an axially parallel relation, an

ring formed with a ball race and :Ldgusmbl-e m sind apertufe. and

ae'ually threaded ring and internally headed ring, and balls carried by said ball .xtufmaj y ses. 10

nom'rxszy En testmonywhereof we have hereunto sn'ifei mu' hands.

ARTHUR BERNWALL.

sal mi AKSEL PULKKA.

:abutting zmanst Sad Mimi" Hug, a, bau-race memberhmm 

